Tracing the origins of COVID19

It has been almost 2 years since the COVID19 pandemic - one of the most significant outbreaks in living history - was declared. But where did the SARS-CoV-2 virus which causes severe respiratory disease come from? Spillover from the wild? Leaked from a lab? We explore what we know about the lineage of this virus and the evidence gathered so far... Like this podcast? Please help us by supporting the Naked Scientists